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If ‘F’ is the frequency of the analog signal, then what is the minimum sampling rate required to avoid aliasing?

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If ‘F’ is the frequency of the analog signal, then what is the minimum sampling rate required to avoid aliasing?

(a) F

(b) 2F

(c) 3F

(d) 4F

The question was posed to me in a national level competition.

This interesting question is from A2D and D2A Converters topic in chapter DSP – Basic Signaling of Digital Signal Processing

1 Answer

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Correct option is (a) F

For explanation: According to Nyquist rate, to avoid aliasing the sampling frequency should be equal to twice of the analog frequency.

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